MODSIM ​​​​​​​3DXCONFERENCE ​​​​​​​Improve_Real-World_Performance_with_Structures_Simulation 

I am pleased to invite you to hear my presentation on the Global 3DEXPERIENCE Modeling & Simulation Virtual Conference, on November 17th. Register now!

My Presentation 

The DEMOnstration power plant (DEMO) is a concept for an electricity-producing, tritium-generating, long-pulse tokamak. With DEMO project, fusion will go from a science-driven, lab-based exercise to an industry-driven and technology-driven program. The blankets of the DEMO Vacuum Vessel (VV) serve as neutron shielding and breeding devices for tritium. These blankets have limited lifetime since they operate in neutron-irradiated environment. Their replacement is necessary and should be foreseen in the maintenance schedule of DEMO reactor. Removal and replacement of blankets are done from the top by crane-like devices. One of the risks, during this operation, is accidental drop of blanket on the VV, which may cause damages on the VV inner and outer shells. Considering the safety confinement function of the VV, a safe design of VV should guarantee the outer shell integrity in such condition to avoid the emission of radioactive substances. This study simulates the free-fall drop of one inboard blanket module on the VV using Abaqus/explicit solver. The aim of the simulation is to evaluate the outer shell integrity when the blanket is dropping on VV. To do so, different drop configurations with different heights and VV impact points were investigated. In all cases the inner shell of the VV failed with large deformations and rupture in the impact zone. The outer shell instead, holds its integrity despite of large deformations. 

Presentation Replay

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